1268results about "Bonded abrasive wheels" patented technology

[Problem] To provide a plasma-assisted polishing method and a device therefor, capable of suppressing one-sided wear of a polishing pad and facilitating attachment / detachment work of a polishing pad and a workpiece in processing of a hard-to-work material using a plasma-assisted polishing method. [Solution] In an operation for relatively moving a workpiece W and a polishing pad P, the workpiece is polished by a combination of the rotation of the workpiece and the polishing pad each having an axis in a first direction, and the swing in a second direction orthogonal to the first direction and increasing or decreasing the distance between the two axes. The workpiece and the polishing pad face each other by being detachably held by mounting parts 10, 13 provided with rotary shafts 9, 12 each directed in the first direction. When the workpiece and / or the polishing pad is attached / detached, the workpiece and the polishing pad are moved in the second direction beyond a range of oscillation in a normal polishing process in a state of stopping the rotation of the workpiece and / or the polishing pad, and the workpiece and / or the polishing pad is attached / detached to / from the mounting part in a state where the workpiece and / or the polishing pad is exposed from the facing member.

The present invention relates to an attachment hub for attachment to a sander, comprising a quick-release attachment assembly configured for releasable and aligned engagement with a counterpart of a backup pad particularly for an abrasive disc. Furthermore, the invention relates to a backup pad having a disc-like shape and comprising a first major surface and a second major surface, the first major surface configured for direct or indirect attachment of an abrasive disc, and the second major surface configured for facing towards an attachment hub for attachment to a sander, and a mounting portion for aligned engagement with an attachment hub of a sander.

The invention discloses a vortex air inner-cooling and inner-lubricating grinding wheel which comprises a hot shaft assembly, a rotating seat assembly, a rotating main shaft, a fan-shaped spray head, a grinding wheel mounting disc assembly and a grinding wheel disc. A hot shaft in the hot shaft assembly, the fan-shaped spray head and a grinding wheel installation disc in the grinding wheel installation disc assembly are sequentially connected with a rotating main shaft through threads, and the grinding wheel disc and the grinding wheel installation disc are fastened through bolts. During machining, compressed air is introduced into one side of the grinding wheel, high-speed airflow generates vortexes through an internal vortex pipeline structure, cold airflow and hot airflow are separated out, and the cold airflow is separated towards the grinding wheel disc side. And meanwhile, lubricating liquid is introduced into the other side of the grinding wheel, cold air and the lubricating liquid converge and enter a grinding wheel disc cavity through a fan-shaped spray head, and then flow out through a grinding wheel hole to cool and lubricate a grinding area. The grinding force and the grinding heat during grinding are effectively reduced, the production cost is reduced, the grinding quality is improved, and green machining is achieved.

The invention provides glass edge grinding equipment. The glass edge grinding equipment comprises a rolling supporting platform, a grinding device and a limiting device. The rolling support platform is used for rolling and supporting a glass plate, and the distance between a polished part and a human body standing position can be adjusted by adjusting deformation; the limiting device is used for supporting one side of the polished edge of the glass plate in a rolling manner; a grinding disc of the grinding device penetrates out of the position between the two supporting assemblies of the limiting device. A grinding groove is formed in the side wall of the grinding disc, is in a closed-loop shape around the axis of the grinding disc and is of a V-shaped groove structure; the limiting device can change the relative protruding range of the grinding disc by adjusting the position of the supporting assembly. The grinding device can vertically move through adjustment, so that the grinding disc is matched with the bearing plane of the rolling support platform; the limiting device vertically moves along with the grinding device; parameters can be automatically adjusted according to grinding requirements, use and operation are convenient, and the adjusting accuracy is high. And the size of the workbench can be adjusted according to requirements, a more suitable working station is provided, and operation is convenient.

The invention relates to a deep blind hole grinding method and a grinding device, the grinding device comprises a working table and a main shaft, a positioning tool is arranged on the working table, the main shaft is connected with a detachable first grinding tool or a detachable second grinding tool, and the length of the first grinding tool is smaller than that of the second grinding tool; the second grinding tool comprises a connecting rod, one end of the connecting rod is provided with a connector, the outer wall of the other end of the connecting rod is sleeved with a grinding tool, the connecting rod between the connector and the grinding tool is sleeved with a supporting sleeve, the supporting sleeve is in clearance fit with the connecting rod, and the end, facing the connector, of the supporting sleeve is connected with a positioning mechanism. The supporting sleeve extending into the blind hole is used for supporting the connecting rod, the stability of the connecting rod can be improved, bending deformation of the connecting rod is prevented, vibration of the connecting rod is reduced, and therefore the grinding precision is improved.

Systems and methods for grinding semiconductor workpieces are provided. In one example, a method includes providing a surface of the semiconductor workpiece against a grinding apparatus. The grinding apparatus includes an abrasive surface. The method further includes imparting relative motion between the abrasive surface and the semiconductor workpiece to implement a grinding operation on the semiconductor workpiece. The method further includes providing a fluid to the surface of the semiconductor workpiece or the abrasive surface during the grinding operation. The fluid includes an additive. The additive includes one or more of an oxidizing agent, an etchant, a surfactant, or a lubricant.

Grinding systems and methods for semiconductor workpieces are provided. In one example, a grinding system includes a workpiece support operable to support a semiconductor workpiece and rotate the semiconductor workpiece about a first axis. The grinding system further includes a grind wheel operable to rotate about a second axis. The grind wheel has a plurality of grinding teeth arranged in a grinding ring on the grind wheel. A radius of the grinding ring is less than or equal to a radius of the semiconductor workpiece (e.g., such that an effective gap ratio between grinding teeth on the grind wheel are reduced).

The invention belongs to the technical field of advanced manufacturing, and particularly relates to a microtexture functional curved surface machining method based on a structured grinding tool, which comprises the following steps of: determining an artificial joint type and an artificial joint surface microtexture array form; a grinding wheel is selected according to the microtexture array form; the grinding wheel is provided with an upper convex part and a lower concave part; mounting the artificial joint and the grinding wheel on a five-axis numerical control ultra-precision machine tool; setting a moving track of a grinding wheel according to the artificial joint type; and polishing the surface of the artificial joint to form a micro-texture array. The micro-texture array is machined on the surface of the artificial joint in a structured grinding mode, and the method has the advantages of being high in machining efficiency, good in process continuity, low in cost and the like, and is wide in applicability and high in flexibility.

The invention discloses a grinding and polishing tool applied to curved surface machining and a preparation method of the grinding and polishing tool. The grinding and polishing tool comprises a grinding and polishing layer, a base body layer and a rigid layer. The grinding and polishing layer is a uniform mixture of hydrophilic resin and grinding materials, protrusions are evenly distributed, the center axes of the protrusions are perpendicular to the lower end face of the tool, and the spherical surface where the tops of the protrusions are located and the spherical surface where the bottoms are located are the same in radius and collinear in sphere center. The matrix layer is made of hydrophilic resin the same as that of the grinding and polishing layer; the rigid layer 3 is one of an organic glass plate, a polyvinyl chloride plate and a polycarbonate plate. A convex tool is adopted for concave surface machining, and a concave tool is adopted for convex surface machining. The grinding and polishing tool is integrally formed, bonding is reduced, functional structure integration of the tool is achieved, and the machining precision is improved; the hydrophilic resin has the swelling characteristic when encountering water, full flexibility of the tool is achieved, and the tool can be attached to the surface of a workpiece easily and has the self-finishing function.

The grinding tool holder (4) of the grinding tool (1) includes: a handle portion (6), a mounting portion (21) for mounting the grinding tool (3), and an electric motor (35), and further includes: a moving mechanism (22) for moving the mounting portion (21) in the axial direction (X) of the handle portion (6), a load detector (23) for detecting the load applied to the grinding tool (3) mounted on the mounting portion (21), and a control unit (52) for driving and controlling the electric motor (35). The control unit (52) monitors the output from the load detector (23), sequentially calculates the change amount of the load, drives the electric motor (35) based on the load and the change amount, and performs a protrusion control operation for advancing and retracting the grinding tool (3) mounted on the mounting portion (21).

The invention discloses an elastic diamond grinding wheel, and particularly relates to the technical field of grinding and polishing machining consumables, the elastic diamond grinding wheel comprises a thin-wall elastic metal cover and a cutter bar, the thin-wall elastic metal cover is of a hollow annular body structure, and the diameter, used for being connected with the cutter bar, of one end of the thin-wall elastic metal cover is smaller than that of the center of the thin-wall elastic metal cover; the diameter of one end of the thin-wall elastic metal cover is larger than that of the center, the diameter of the other end of the thin-wall elastic metal cover is smaller than or equal to that of the center, multiple sets of diamond abrasive particles are evenly arranged on the outer side of the thin-wall elastic metal cover, the cutter bar is arranged at one end of the thin-wall elastic metal cover, one end of the cutter bar is of a hollow structure, and a bolt is connected into the hollow end of the cutter bar through threads. The outer side of the bolt is sleeved with a gasket; according to the diamond grinding wheel, the problem that an existing electroplating grinding and polishing wheel or a brazing grinding and polishing wheel lacks flexibility can be solved, the problem that an existing overlapping wheel or an abrasive belt wheel is short in service life can also be solved, a new consumable tool is provided for automatic blade root fillet grinding, and the quality of a ground and polished blade is guaranteed.

A bonded abrasive comprising a body including abrasive particles contained within a bond material, wherein the abrasive particles comprise a first group of abrasive particles in a first content (Cl), the first group including shaped abrasive particles having a first average particle size (PSI) and a second group of abrasive particles in a second content (C2), the second group including non-shaped abrasive particles having a second average particle size (PS2), wherein PS2<PS1 and a content ratio (C2 / C1) of at least 0.05 to 1.

The present invention provides a process of forming a cutting tool comprising the steps of: additive deposition of a tool material comprising at least one of: tungsten carbide, TaNbC, a tungsten carbide containing alloy or composite, or a TaNbC containing alloy or composite onto a base substrate having a longitudinal axis, said tool material being deposited onto the base substrate to form a deposit body configured to form at least one cutting formation therein; and subsequently subtracting selected portions of the deposit body to produce at least one cutting formation having a selected cutting edge configuration, thereby forming the cutting tool.

The invention relates to a cover plate cold carving grinding head, a machining method of the cold carving grinding head and an application method of the cold carving grinding head. A cover plate cold carving grinding head comprises a cutter handle, a cutter head, cooling holes, a cooling groove and a cooling transverse groove, the cutter head is arranged at one end of the cutter handle, the cooling holes are formed in the middle of the cutter handle and the middle of the cutter head, the cooling groove is formed in the bottom of the cutter head, the cooling holes penetrate through the cutter handle and the cooling groove in the bottom of the cutter head, and the cutter head is provided with a plurality of grinding heads. The multiple grinding heads are evenly distributed on the periphery of the tool bit, and a cooling transverse groove is formed between every two adjacent grinding heads. By means of the mechanism, the problems that a traditional cold carving grinding head does not have the cooling function, multiple times of tool switching and multiple times of program switching are needed in the machining process, due to the fact that the cooling effect of the grinding head is poor, the grinding head is seriously worn, tool marks are likely to appear on glass, the follow-up polishing procedure is difficult to manufacture, and continuous automatic production cannot be achieved are solved.

The utility model discloses a diamond grinding brush applied to glass and ceramics, and relates to the technical field of diamond grinding brushes, the diamond grinding brush comprises a mounting disc and a diamond brush head, the front surface of the mounting disc is provided with a front positioning groove, the back surface of the mounting disc is provided with a back positioning groove, and the back surface of the diamond brush head is fixedly provided with a connecting plate; a connecting block is fixedly installed on the side, away from the diamond brush head, of the connecting plate, an inserting hole is formed in the inner side of the connecting block, and the side, close to the connecting block, of the diamond brush head is inserted into the inner side of the front positioning groove. By the adoption of the structure, after the clamping spring and one fixing bolt are taken down, the limiting frame is pulled out, and at the moment, the spring in the mounting cavity resets to push the limiting plate to move and drive the insertion block to be separated from the insertion hole of the connecting block, so that the diamond brush head can be conveniently and rapidly disassembled, assembled and replaced.

A tool segment (60) for a grinding tool for surface finishing of building materials has a base body (110) with an end face (112), a rear face (114) facing away from the end face (112), and a circumferential region (122) extending between the end face (112) and the rear face (114). The end face (112) is equipped with at least one hard material cutting element (140, 142). The rear face (114) has at least one fastening element (130) for mounting on a base body of a grinding tool. At least one circumferential side (124) of the circumferential region (122) is equipped with at least one hard material cutting element (150). A grinding tool has at least one such tool segment (60). A grinding machine for surface finishing of building materials has at least one such grinding tool.

A skate blade sharpening system used to sharpen the blades of ice skates. The skate sharpener can include a housing that includes an elongated slot for receiving the blade of an ice skate for sharpening, and clamp jaws for retaining the skate. The housing can include at least one slot cover to engage the skate blade. Engagement of the skate blade can be sensed by a controller to enable sharpening operations to proceed. The skate blade sharpening system can automatically operate a grinding wheel and move the rotating grinding wheel back and forth along the lower face of the skate blade a desired number of times to sharpen the skate blade.

The utility model discloses a polishing wheel base body of a folding steel structure, which comprises a mounting seat, a rubber base body and a grinding material belt base body, the middle part of the mounting seat is mounted on a grinding wheel rod, the rubber base body is positioned on the peripheral wall surface of the mounting seat, the grinding material belt base body is folded and pleated to form a belt-shaped structure with wrinkles, and the rubber base body is positioned on the outer wall surface of the mounting seat. Rubber reinforced isolation blocks are arranged between the corrugation structures on the upper face and the lower face of the abrasive belt base body respectively, the abrasive belt base body of a belt-shaped structure is wound around the outer side wall face of the rubber base body, and then a complete polishing wheel base body is formed for polishing machining. The polishing wheel base body does not contain seams in the circumferential direction, the bonding strength is higher, the polishing wheel base body is not prone to falling off due to scratching, meanwhile, automation is easy to achieve in the process, mass production can be achieved, the manufacturing cost can be remarkably reduced, the polishing wheel base body can be popularized and applied to the civil industry grinding and polishing process, comprehensive automation of the process is achieved, and manual grinding is thoroughly eliminated.

The present disclosure provides a bionic Australian thorny devil grinding wheel, a grinding device, and a preparation process, and relates to the field of grinding equipment. For the problem of the poor effect of conveying grinding fluid by a grinding wheel at present, imitating semi-open capillary channels and a honeycomb structure on the skin of the Australian thorny devil, prisms with isosceles trapezoidal bottom surfaces are arranged on a matrix in sequence to form directional liquid self-conveying flow channels and a superhydrophilic honeycomb-like hexagonal distribution structure.

The grinding wheel comprises a grinding wheel body, a mounting section, a chamfering section and a cutting section are sequentially formed on the grinding wheel body from the circle center to the outside in the diameter direction, and the chamfering section is composed of a chamfering face with the included angle beta between the two faces. The cutting section is composed of two cutting surfaces with an included angle of alpha, and alpha < lt >; beta; an annular groove is formed in the intersection of the cutting surface and the chamfering surface; meanwhile, the utility model discloses a device for machining the closed gap of the piston ring, the device comprises a die sleeve, a ring gauge and a grinding wheel body, and a die sleeve cavity is formed in the die sleeve. The annular groove is formed between the chamfering section and the cutting section of the grinding wheel, the density of electromagnetic wires at the annular groove is increased, nickel base deposition at the position is increased, the carborundum bonding strength of the position is improved, meanwhile, the annular groove can discharge metal chips generated by cutting, heat dissipation is improved, and the service life of the grinding wheel is prolonged. The service life of the grinding wheel is prolonged.

The invention provides large-size single crystal diamond polishing equipment and a polishing method, and belongs to the technical field of diamond polishing. The large-size single crystal diamond polishing equipment comprises a polishing machine, a polishing disc and a polishing clamp; one end of the polishing disc is connected with a polishing machine, and the other end of the polishing disc is in contact with a to-be-polished surface of a polished diamond; wherein the polishing machine is used for driving the polishing disc to rotate, so that the polishing disc is in contact and fit with the to-be-polished surface of the diamond to form extrusion, and the to-be-polished surface of the diamond is polished. The large-size single crystal diamond polishing equipment and the polishing method have the technical effects that the large-size single crystal diamond can be ground and polished, a plurality of large-size single crystal diamonds can be polished at the same time, the roughness is low, the polishing efficiency and the polishing quality are effectively improved, and high-quality large-size single crystal diamond polished wafers can be obtained.

An abrasive article can include a core and an abrasive component attached to the core. The abrasive component may include a body including a leading end and a trailing end, wherein the leading end has a width greater than a width of the trailing end. In an embodiment, the abrasive component may include a body including a first abrasive portion and a second abrasive portion, wherein a radial width of the first abrasive portion is greater than a radial width of the second abrasive portion.

The invention discloses a low-heat efficient steel rail cutting blade for railway steel rail cutting and a manufacturing method of the low-heat efficient steel rail cutting blade, and belongs to the technical field of tools for grinding, polishing or cutter grinding. The low-heat efficient steel rail cutting blade is prepared from the following raw materials in parts by mass: 100 to 135 parts of grinding material, 10 to 20 parts of resin adhesive, 20 to 30 parts of functional filler, 4 to 8 parts of self-lubricating pore-forming material and 3 to 5 parts of wetting agent. The steel rail cutting fluid has good cutting performance and anti-burn performance, 60 # steel rails can be cut at a time within 90 s, it is guaranteed that no obvious burn exists on the cutting face, and the steel rail cutting machining tolerance requirement is met.

The utility model discloses a grinding wheel which comprises a base body and grinding blocks, a groove hole penetrating through the end faces of the two sides is formed in the center of the base body, a plurality of grinding blocks arrayed in the circumferential direction are arranged on one end face of the base body, the grinding wheel further comprises a plurality of positioning devices, and the positioning devices are arranged on the end face, supporting the grinding blocks, of the base body. One positioning device corresponds to one grinding block, and the positioning devices make contact with the grinding blocks and are used for determining the positions of the grinding blocks. Firstly, the positioning device is installed on one end face of the base body, then the position of the grinding block is determined according to the position of the positioning device, and the grinding block is installed on one end face of the base body and makes contact with one side of the positioning device. Due to the positioning device, the positioning precision of the grinding block is greatly improved, the grinding wheel can keep higher stability and consistency in the machining process, machining errors caused by inaccurate positions of the grinding block are reduced, the machining quality is improved, and the product quality can be improved.

The invention provides a composite abrasive part, application, a preparation method and a processing machine tool, the composite abrasive part can be used for inner hole processing and grinding wheel processing, and the composite abrasive part is formed by mixing and pressing multi-granularity composite abrasive particles and a metal-resin binding agent. According to the multi-granularity composite abrasive particles, small-granularity particles are used for filling gaps among large-granularity particles, so that the number of effective abrasive particles participating in material removal on the surface of an abrasive layer is increased, the material removal depth of a single abrasive particle is reduced, and the surface roughness is improved; the composite grinding material piece comprises a rigidity grinding and polishing composite section, and the rigidity grinding and polishing composite section comprises rigidity grinding areas and flexible polishing areas which are sequentially and alternately combined in the axial direction or the circumferential direction of the composite grinding material piece, so that the material removal process is discretized, the possibility of generating machining cracks is reduced, and efficient mirror surface machining is achieved.

The invention relates to a diamond grinding tool capable of preventing workpieces from being scratched, and belongs to the field of grinding machining. Comprising a plurality of grinding pieces and a base body, the multiple grinding pieces are arranged on the base body in a winding mode, a gap between every two adjacent grinding pieces is a chip removal water through groove, and the multiple grinding pieces and the multiple chip removal water through grooves form an annular structure; the grinding part is composed of a grinding part base body and a grinding layer, the grinding layer is composed of a binding agent and a plurality of diamond particles, the diamond particles are solidified on the grinding part base body through the binding agent, and the diamond particles are arranged in a single layer in the circumferential direction of the grinding layer in the rotating direction of the grinding tool. According to the grinding tool, falling diamond particles can directly fall into the chip removal and water passing groove and are discharged out of the grinding tool under the action of centrifugal force and cooling water, the diamond particles do not pass through a grinding area any more, the stagnation or rolling or sliding process of the diamond particles between the surface of a grinding tool binding agent and a workpiece is eliminated, and the scratch-free effect of the workpiece is achieved.

The invention discloses a grinding piece, and relates to the technical field of grinding pieces, the grinding piece comprises a base body layer and a wear-resisting layer, the wear-resisting layer comprises wear-resisting pieces and supporting blocks which are alternately distributed, and the wear-resisting pieces and the supporting blocks are directly installed on the base body layer; the wear-resisting layer is composed of the wear-resisting piece and the supporting block which are installed on the base body layer, the supporting block can support the wear-resisting piece from the side direction of the wear-resisting piece, and therefore the tangential stress bearing capacity of the wear-resisting piece is improved, the overall hardness and toughness of the grinding face are guaranteed, and the grinding face is not prone to cracking or cracking or other defects. Meanwhile, the wear-resistant layer is detachably mounted on the base body layer, so that the wear-resistant layer can be independently replaced in a conventional state, the base body layer is reserved, and more cost is saved; and in addition, during use, the wear-resisting unit can abut against the interior of the mounting groove by inertia or friction force and cannot fall off.

A grinding apparatus has a grinding wheel fastened to a mount disk connected a spindle by a plurality of bolts. The mount disk has at least three threaded holes and a plurality of protrusions protruding from a mount surface thereof. Each of the bolts includes an externally threaded shank, a neck coupled to the externally threaded shank, and an engaging flange coupled to the neck and extending radially outwardly. The grinding wheel includes an annular open hole defined in a mating surface of an annular base for mating with the mount surface, an annular slot that is wider than the annular open hole and is fluidly connected to the annular open hole, at least three insertion holes in the annular open hole for allowing the engaging flange to be inserted into the annular slot, and a plurality of protrusion insertion holes for receiving the engaging flanges of the bolts.

The invention relates to an electroplated single-layer diamond anti-deformation grinding piece, a grinding ring and a special-shaped grinding wheel, the electroplated single-layer diamond anti-deformation grinding piece comprises a grinding layer and a grinding piece base body, and the grinding layer is fixedly connected to the grinding piece base body; the grinding layer is a plating layer of single-layer diamond abrasive particles; the section length of the grinding layer from one side to the other side corresponding to the minimum axial machining allowance of the workpiece is twice the thickness of the grinding layer; and the section length of the grinding layer from one side to the other side corresponding to other points in the axial direction of the workpiece is as follows: machining allowance of the axial point / minimum machining allowance * thickness of the grinding layer. The longer the length of the grinding layer corresponding to the circumferential direction is, the larger the number of diamond abrasive particles contained in the grinding layer is, the higher the abrasive resistance is, and the grinding layer corresponds to a part with large machining allowance; the shorter the length of the grinding layer corresponding to the circumferential direction is, the smaller the number of diamond abrasive particles contained in the grinding layer is, the lower the abrasion resistance is, and the corresponding machining allowance is small, the equal-shape abrasion of a grinding piece is achieved by adjusting the circumferential length of the grinding layer corresponding to all the points of the workpiece in the axial direction, and the shape of the peripheral face is kept unchanged in the machining process of the special-shaped grinding wheel.

The utility model discloses an annular grinding wheel, which belongs to the technology of mechanical precision machining grinding tools. In the existing precision machining, multiple clamping is labor-consuming and time-consuming, and it is difficult to take into account both surface quality and grinding efficiency when completing grinding at one time. The annular wheel body of the utility model includes a base part and a difference part that are made into one body. The base part and the difference part extend together to the outer annular surface or / and the inner annular surface so that the outer annular surface or / and the inner annular surface both include grinding surfaces with different grinding characteristics. The grinding surfaces with different grinding characteristics include a base grinding surface formed by the base part and a difference grinding surface formed by the difference part. During grinding, different grinding processes can be simultaneously realized by the same grinding wheel, the workpiece is clamped at one time, and different grinding processes are completed at one time. It is suitable for one-time positioning, and a grinding process that takes into account both efficiency and surface quality during grinding.